/*
 * Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 2000-2002 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Xerces" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 1999, International
 * Business Machines, Inc., http://www.apache.org.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package com.sun.org.apache.xerces.internal.impl.dtd.models;


/**
 * Content model any node.
 *
 * @xerces.internal
 */
public class CMAny
    extends CMNode {

  //
  // Data
  //

  /**
   * The any content model type. This value is one of the following:
   * XMLContentSpec.CONTENTSPECNODE_ANY,
   * XMLContentSpec.CONTENTSPECNODE_ANY_OTHER,
   * XMLContentSpec.CONTENTSPECNODE_ANY_LOCAL.
   */
  private int fType;

  /**
   * URI of the any content model. This value is set if the type is
   * of the following:
   * XMLContentSpec.CONTENTSPECNODE_ANY,
   * XMLContentSpec.CONTENTSPECNODE_ANY_OTHER.
   */
  private String fURI;

  /**
   * Part of the algorithm to convert a regex directly to a DFA
   * numbers each leaf sequentially. If its -1, that means its an
   * epsilon node. Zero and greater are non-epsilon positions.
   */
  private int fPosition = -1;

  //
  // Constructors
  //

  /**
   * Constructs a content model any.
   */
  public CMAny(int type, String uri, int position) {
    super(type);

    // Store the information
    fType = type;
    fURI = uri;
    fPosition = position;
  }

  //
  // Package methods
  //

  final int getType() {
    return fType;
  }

  final String getURI() {
    return fURI;
  }

  final int getPosition() {
    return fPosition;
  }

  final void setPosition(int newPosition) {
    fPosition = newPosition;
  }

  //
  // CMNode methods
  //

  // package

  public boolean isNullable() {
    // Leaf nodes are never nullable unless its an epsilon node
    return (fPosition == -1);
  }

  public String toString() {
    StringBuffer strRet = new StringBuffer();
    strRet.append("(");
    strRet.append("##any:uri=");
    strRet.append(fURI);
    strRet.append(')');
    if (fPosition >= 0) {
      strRet.append
          (
              " (Pos:"
                  + new Integer(fPosition).toString()
                  + ")"
          );
    }
    return strRet.toString();
  }

  // protected

  protected void calcFirstPos(CMStateSet toSet) {
    // If we are an epsilon node, then the first pos is an empty set
    if (fPosition == -1) {
      toSet.zeroBits();
    }

    // Otherwise, its just the one bit of our position
    else {
      toSet.setBit(fPosition);
    }
  }

  protected void calcLastPos(CMStateSet toSet) {
    // If we are an epsilon node, then the last pos is an empty set
    if (fPosition == -1) {
      toSet.zeroBits();
    }

    // Otherwise, its just the one bit of our position
    else {
      toSet.setBit(fPosition);
    }
  }

} // class CMAny
